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Ground source (geothermal) heat pumps are similar to air source heat pumps, but use the relatively constant ground temperature instead of the air to provide heating, air conditioning and, in many cases, domestic hot water. In a cold climate like Wisconsin, consider a ground source heat pump to save natural gas.

Ground source systems do not usually use backup heat because the ground temperature remains constant at 45F to 55F all year round. However, even a ground source heat pump may not be able to completely meet a home's heating needs on the coldest days of the year. Thus, these units are usually equipped with backup heat. Geothermal heat pumps usually rely on a traditional duct and register system (used in forced air furnaces) to distribute conditioned air. Ground source heat pumps use electricity to provide heating, but in a much more efficient manner than electric baseboard or portable space heaters. Although these systems don't burn fossil fuels themselves, the electricity used to power the systems is generated by burning fossil fuels in most areas of Wisconsin.

If you are thinking about installing a ground source heat pump, look for the ENERGY STAR^®. ENERGY STAR qualified geothermal heat pumps use about 30% less energy than a standard geothermal heat pump and are quieter than conventional systems.

FAQs
This page contains a list of consumer questions we hear most often.

Cash-Back Rewards Available
Click on the link above to find out what Rewards are available for the purchase of select heating & cooling equipment. Eligibility for this program is determined by your electric utility service area. Please use the eligibility tool to see if you are eligible.

Find a Participating Contractor
Hundreds of heating and cooling contractors from all over Wisconsin have signed up to participate in the Efficient Heating & Cooling Program. Only participating contractors can offer these rewards, but non-participating contractors can still sign up. To see a list of participating contractors use our search tool found at the link above.

View the fact sheet below to learn more!
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